Covering web having discrete regions possessing different drainage capabilities
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United States of America Patent
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Oct 10, 1995
Grant Date -
N/A
app pub date -
Jul 30, 1993
filing date -
Dec 27, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coveting web formed by a compound web material of coarse filaments and fine microfibers constituting a mixture without discrete phase boundaries between the individual components. The compound web material is produced in an integrated formation process on the same layering device of a web-forming installation. As a novel feature, the compound web material has strip-like regions not forming a mixture but consisting only of coarse filaments or containing only a small proportion of free microfibers. These strips are bordered on either side by other strips containing a mixture of both components--coarse filaments and free microfibers.
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